Boring-drill



G. W. HANSON,

BORING DRILL.

APPLICATION FILED AUG.2. 1920.

Patented Nov. 29, 1921.

5 SHEETS-SHEET 70 I 67 W 03, QW

e. w. HANSON.

BORING DRILL. APPLICATION FILED AUG-2, 1920.

1,398,551, Patented Nov. '29, 1921 5 SHEETS-SHEET 2.

27 Q Qwuvntov gmzmz'y G. w. HANSON.

BORING DRILL. I APPLICATION FILED AUG-2, 1920.

Patented NOV. 29, 1921.

5 SHEETSSHEET 3.

G W. HANSON.

BORING DRILL.

APPLICATION FILED AUG-2. 1920.

, Patented Nov. 29, 1921.

5 SHEETS-SHEET 4- G. W, HANSON.

BORING DRILL.

APPLICATION FILED AUG-2. 1920.

1,398,551. Patented N0m29,1-921.

31mm fo'c a E 259257 (1H0: net;

- GUSTAIE W. HANSON, 0F WICHITA, KANSAS.

BORING-DRILL. k

T 0 all whom. it may cancer rt Be it known that I, GUSTAF W.HANsoN, a

,citizen of the United States, residing at The invention 1s.appliedparticularly to the rotary, motor operated type of boring 0drills, especially adapted for use in drilling binations andarrangements of parts, and I certain novel features'of construction 1nthe oil and gas wells, and for other earth boring operations, and isdesigned to provide a compactly arranged, and self contained power-unitand drill head that may be manipulated and operated with facility.

The invention involves certain novel comrot-ary drill unit and drillhead and their connections, including an elevated power unit and thedrill head suspended there from, together with particular arrangementsof parts in the drill head for "suspending the drill spindle and wellcasing. By the utilization of myinvention. the well casing whichaccompanies thedrilling stem and bit, is lowered simultaneously with thedrilling tool as fast as the latter digs into the ground, thuseliminating the'danger of caving in of the walls, as the boringprogresses. In a copending application for patent, Serial No. 400,712,filed August-2, 1920, means are illustrated whereby the feed of thecasing and stem are automatically regulated. a

Provision is made for an improvedcirculation of water whereby thecuttings from the drill bit are removed through the wall casing, and theincreased flow ofwater that results from the use of my invention, byhydraulic action, enhances the cutting opera tions of'the bit. In theaccompanying drawin s 1 have illustrated one complete examp e of thephysical embodiment of my invention in which the parts are combined andarranged according to the best mode I have thus far devised for thepractical application of the principles of my invention.

Figure 1 is a view in side elevation of the Specification of LettersPatent. Patented N0 29 1921 Application filed 'August 2, 1920. SerialNo. 400,713. I I

rotary power unit and alined drill head and connections for operatingthe drill stein.

through the overflow basin, on-line 33 of Fig. 12.

Fig. 4 is a detail view, in section, of the coupling chuck connected tothe extra sections of the drill stem during drilling opera.- tlons.

Fig. 5 is a transverse sectional view on lines 5'5 of Fig. 4: of thecoupling chuck.

beam at line 66 of Fig.1. e Fig. -6 is a detail View, partly brokenaway, showing the' drill chuck and an auxiliary tool or connectingwrench employed in the process of connecting. extra sections to thecasing. I

I ig. 7 is a top plan view of the connecting wrench tobe used inconjunction with the chuck for making or withdrawing 'conne'ic tions inthecasing. ,y 7 I I I Fig. '8 is a view in side elevation ofthe wrench.M

Fig. through the drill head on line 9 9 of Fig. 2

showing the inlet'to and flow of water from' the head. U ,p Fig. 10 is adetail showing a face view of one of the guide rollers forthe movablefeed frame, r 3 H c Fig. 11 is a transverse'sectional View on line11-11of Fig. l illustratingionelof the Fig.0 is a sectional view of thedrill head 9- is a transverse sectiOnalview guide rollers and its forthe movable v frame. ,1 v

Fig. 12 is a view partlyin elevation and partly in section of theoverflow basin and water outlet therefrom. I

Fig. 13 is a detail sectional :view at iiline '13-13 of Fig. 6*, showingthe-drill chuck sleeve keyed to the drill spindletoprevent relativemovement of the parts.

In the preferred form of my invention as illustrated in the drawings,reference may be had to the generalassembly'view ofFig. 1 in which theessentialelements of the vention are depicted and their combination andarrangement shown.

In carrying out the purpose of inven tion I utilize a rectangular frame1 that is movable with the feed of the drilling tools, and guided bymeans of the two columns 2, 2 that are erected centrally of a derrick ortower of the drilling outfit, part of the transverse frame of the towerbeing indicated at 3, 3, of Fig. 1.

Rollers 4, 4, are journaled on'the movable frame to facilitate themovement of the frame in its descent as. the drilling proceedsv and touide the apparatus when wlth'drawing or elevating the power unit, toaddextra sections to the well casing and drill stem.

The power for the drilling machine is provided by an'electric motor 6,with wires 6 extended to a source of supply on the ground, and the motoris rigidly attached to the movable frame 1 by brackets 7, 7. The frame 1is made up of channel iron beams and the brackets are fitted into thechannels and bolted or riveted therein.

The power unit, although described herein as an electric motor, may beof other types, such as an internal combustion engine, pneumatic motor,or steam operated machine, arranged in vertical alinement with thedrilling mechanism, and in connection with the electric motor I utilizea gear within the casing 8 alined'with the armature shaft 9 of the motorto reduce the rotary movement of the motor from high speed for revolvingthe transmission shaft 10 of the drill head.

A safety device or clutch 11 is used in the transmission of rotary powerto the operatingparts of the drill head, which clutch is indicated as awhole by the numeral 12.

The movable frame is located centrally of the derrick or tower and isdesigned to descend as the drilling operations proceed, and to beelevated or hoisted toward the upper end of the tower after the drillhead-is disconnected from the well casing and drill stem preparatory tothe addition of extra sections of casing and stem. i To guide themovement of the frame, the rollers 4 run in the trackway formed by theH-beams, as best seen in Fig. 11, and preferably angle irons 13 areriveted to the opposite edgesof the H-beams to form retaining flangesfor the rollers 4, 4. The frame is thus guided in its movement andretained in proper' alinement withthe drilling tools or devices operatedfrom the motor.

The transmission clutch or safety device '11 (Fig. 1) is of the wellknown pin-belt type employing a driving disk 14 on the transmissionshaft 10, with pins 15 depending therefrom, and a complementary disk 16with upwardly extending pins 17. These two sets of pins are arranged onconcentric lines about the center of the disks,- with a leather belt 18istertwined between them. Should an excessive resistance to the rotarymovement of the motor be encountered for broken be re damage can come tothe drill-- ing tool ,beneath the safety clutch.

he beam 19 for supporting the drill head.

is a metal casting of invertedU shape, as seen in Fig. 6, with its endsprojecting into the channels of the opposed channel iron beams of theframe 1, and the transverse beam 19 is rigidly secured, as by boltsorrivets, to the two side bars'of the frame 1.

The cross beam 19 is fashioned with a vertically extending integral,central, cylindrical element 20, forming the water inlet chamber for theintroduction of water from the inlet boss 21, to which is attached theinlet hose or ipe (not shown). The upper end of this 0 amber'is closedby a transverse ring 22 formed with a depending central thimble 23', andbelow the water chamber 24, a sleeve 25 is formed, having an end flange26.

The hollow drill spindle 27 is revolubly An annular series of bearingrollers 31 is interposed between the cup 32 of the packs ing gland andthe spindle, and annular packing rings 33, of felt, may also beutilized.

At its upper end the hollow spindle is formed with a solid shaft portion34, an annular shoulder 35, a threaded extension 36, and a reducedthreaded end boss 37. The

boss 37.is threaded into sleeve 38 of the driven disk 16 of thetransmission safety clutch l1, and the extension 36 receives the bearingplate 39.

The strain of transmitting rotary motion from the driven disk to thedrill head is taken by the series of four bolts 40 passed longitudinallythrough the sleeve 38, plate 39 and threaded into the shoulder 35 of thedrill head shaft, and these bolts hold the head 38 from unscrewingduring reverse action of the head. It will thus be apparent that thedisk 16, plate 39 and shaft 34, formarigid structure that is revolublein the drill head under power from the motor.

; Two annular sets of ball bearings as 40 and 41, are provided, ,onebelow and the other above the bearing plate 39, the usual groovedbearing rings 42 being "mployed and retained in their places by theheadplate 43 and bolts 44 passed through the flange 45 of the drill-headbeam 19.

The water inlet 21 to theinlet chamber 24 is located below the bearingsfor the shaft in the drill head, and the water is supplied to theinterior of the hollow drill spindle 37 through ports 46 therein andports 47 in a packing sleeve 48 interposed between the gland 28 and theinternal sleeve 23 of the water chamber 24. Flexible metallic packing 49is provided to form a close leak proof joint. -The flow of water forcirculation to the bottom of the well is indicated by the arrows in Fig.9, and it will be apparent that the currents of waterflow through theinlet boss 21, from an attached or casing,

hose, thence through the ports 47 and 46 to the bottom of the hollowspindle, and then the water descends to the bottom of the well throughthe drill stem 50.

At the lower end of the hollow drill spindle, a chuck, indicated as awhole by the numeral 51, is utilized as the connection between thedrillspindle and drill stem 50.-

As best illustrated in Figs. 1, 4 and 13, the spindle 27 is threadedinto the collar 52 of the chuck and a transverse key 53 passed through'aslot in the collar and agroove in the spindle is utilized to lock theseparts against displacement.

The stem 50, which may be a 4" pipe is entered up through the bottom ofthe chuck, and threaded into the base of the collar 52 at 54, and ispositively held in the head 55 of the chuck by a pair of opposed jaws56' and 57. These jaws, it will be noted, are fashioned with curved,toothed faces or racks 58 and 59, arranged in opposite directions, inorder that one jaw may positively engage the periphery of thecylindrical drill stem and co-act with its complementary jaw, whenrevolving the stem in one direction, as for the drilling operations. Thedrilling operations depend upon. I

- against the stem by tlienction of the pair place in of wedge keys 61which slide tangentially of the stem in their slots 62 of the chuckhead. Wedge shaped keys 63 may be employed to lock the slotted wedgekeys in the drill head and the locking keys are-passed through slots inthe base plate 64 of the chuck 51.

From the abovedescription it will be understood that the successivedrill stem sections 50 are added to the drill stem andsecured at theirtop ends to the chuck, and that the rotary motion of the motor istransmitted to the drill stem through the instrumentality of the drillspindle shaft and the chuck as described.

A drilling bit (not shown) is attached at the lower end of the drillstem, to cut away the ground structure at the bottom of the well, andsuch a drill bit forms the subject may - screwlng.

matter of a copending application for Patent Serial No. 398,785 filedJuly 24, 1920.

. The well casing65 is of larger diameter than the drill stem andsurrounds the stem. The casing is made up of the usual sections,corresponding in length to the sections of the drill stem, and issuspended from the drill-head beam 19 through the instrumen- 'tality ofa pair of arms 66 and 67,, each piv- .oted on a headed pin 68 passedthrough the beam, which is perforated for the purpose, and securedtherein by a key 69. Near the lower ends of the suspending arms 66 and67 are provided a series of spaced perforation 70, to receive theattaching bolts 71, by

means of which the cross head 72' may be adj ustably attached to thearms. t

The cross head is a steel casting with forked ends or pairs of lugs 73to accommodate the fiat arms'66 and 67- therebetween.

The body of the cross head 72 is fashioned as a cylindrical, open,vertically disposed cup 74, and is of sufficient strength to form arigid-and stable connection between the two suspending arms, for holdingthe lower end of the drill head in alinement'with the powerunitsupported thereabove.

Within the cup 74 is provided an integral, central, annular flange 75,and above the cup is located the overflow basin-76 having an exteriorannular shoulder 7 4 fitting over the top peripheral edge of the cup andclosingthe same. The top 77 of the basin is perforated for reception ofmembers of a wrench or tool, to be described, for rotation by thewrench, and the bottom 78 of the basin is provided with an annularseries of ports 79 for passage of water from the basin to. the interiorof the cup.

In the bottom of the basin a downwardly projecting sleeve 80 isprovided, which, at its upper-end, rises above the basin bottom and by areturn bend 81 is integrally joined thereto, thus fashioning an annularrecess or socket 82 to slip over the upper edge of the flange 75 of thecup and inclose "the same.

At its lower end, which projects below the body of the cross head, thesleeve 80 is threaded to receive .an enlarged nipple, or flanged openbushing 83, and a lock screw 84 be used to hold these parts from un- Thelowe end of the bushing has an open extension or thimble 83 to which acoupling sleeve 85 of the well casing 65 is also screwed. i

It will be obviousthatin addition to form;

ing a brace. and support for the well casing and :drill, the cross headalso forms the overflow device forv disposing of the water as it risesinthe well casing from the bottom of the well. Thus in Fig. 112 thearrows indicate the descent of the water inthe drill stem 50, and otherarrows designatethe ascent of water in the well casing outside the stem.The ascending currents pass through the well casing, coupling, andsleeve 80 to the interior of the basin 76, thence down through the portsinto. the cup and flow.

around the cup and out through port 86 and nozzle 87 cast upon thebottom of the cup, and the water may be conveyed to the sump by a hose(not shown) attached to the nozzle.

Ina co-pending application for patent Serial No. 398,784 filed July 24,1920, I have swing to position for attachment to the easingand stem asthe drilling proceeds. In

Figs; 6, 7, and 8 of the present case I illus trate a wrench or toolemployed in the proc-. ess of disconnecting the drill head from the wellcasing thus disengaging the drill head preparatory to changing the wellcasing and drill stem sections.

,The wrench is designated as a whole by the numeral 88 in.Figs. 7 and 8and comprises openable aws 89, 89 with interlocking perforated ears 90,90 to receive the detachable securing pins 91, 91. At opposed corners ofthe flat, diamond shaped tool are a pair of dependent, fixed studs 92,92, which are adapted to be inserted in the openings 93, 93 in the topplate 77 of the overflow basin 76 which is rigidly supported asdescribed on the cross head 72.

The pins 91 of the wrenchare of sufiicient length to be passed throughopenings. or grooves 94, 94 in the chuck head 55 (Figs. 5 and 6 a Thewrench is placed inoperative position about the stem 5Q by applying theopen jaws 89- thereto and coupling the jaws together with pins 91 afterpassing said pins through openings 94 of the chuck head 55, and thestuds 92 are lowered into the openings 93 of the overflow basin. I

A wrench or holding tool (not shown) is now applied to the couplingsleeve 85 of the ,well casing to hold the same against rotary movement.The spindle 27 and chuck are then revolved to unscrew the basin and itsbushing 83 and thimble 83 from the stem coupling sleeve 85 (Fig. 12),.the basin and its connected partsbeing'free to revolve in the'beam. Bythis means the drill head may be disconnected from the well tube orcasing, and after the chuck 51 has been unscrewed from the top of thedrill stem 50 the frame 1 and its drill head, including the chuck, maybe elevated to provide room for the additional tube section'and drillstem section.

The chuck 51 is unscrewed from the top of the drill stem 50,after-thekeys 63 and 61 have been loosened. But previous to turning thechuck onthe stem the supporting arms 66 and 67 are disconnected from thebeam 72 by the removal of the bolts 71, and the arms are swung outwardlyon their pivots 68 to permit the application of a wrench or similar tool(no-t shown) to the drill stem 50 just below the chuck and above theoverflow basin in Fig. 1. WVhile the tool holds the stem, the spindle2-7 and chuck are revolved, thus freeing the chuck from the' drill stem.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is l. The combination in a rotary drill headand its suspending frame including a cross beam,'of supporting armspivoted on said beam, a cross head connecting the free ends of said armsand formed with an open top cup having an outlet, an overflow basinclosing the cup and communicating there/ with, said basin having acentral sleeve projecting through the cup, and a well tube posedescribed.

2. In a water-circulation device as described, the combination with aninclosed drill stem, of a suitably supported member fashioned as an opencup and provided with an outlet, an overflow basin closing said open cupand communicating therewith, a sleeve on the basin projecting throughthe open center of said cup, and a well casing surrounding said stem andcommunicating with said basin. I

3. The combination with the open cup member having an outlet and acentral annular flange, of an overflow basin closing said cup andprovided with a perforated bottom, a sleeve on said bottom fitted oversaid flange and projecting below the cup. a drill stem inclosed by saidmembers, and a well casing communicating with said sleeve, for thepurpose described.

4. The combination with supporting arms, of a cross beam andmeans forsecuring said beam to said arms, said beam formed with a cylindricalopen cup having a central annular flange and an outlet from the cup, ofan overflow basin having a perforated bottom closing said cup, a centralsleeve formed with an annular socket and integral with the bottom of thebasin'fitted over the top edge of said flange, a drill stem inclosed bythe cup and basin, a nipple threaded on the end of said sleeve, athimble onsaid nipple, a well 'tube surrounding the stem and a couplingsleeve connecting said tube and thimble. 1

5. The combination in a rotary drilling machine,- qf a'drill head anddriven spindle, a drill stem connected to said spindle, a cross beamsupporting said members and fashcommunicating with said sleeve for thepurioned with cylindrical walls forming a water inlet chamber, therebeing communication between said chamber and spindle for flow of waterto the drill stem.

6. The combination with a rotary .drill shaft having its lower endformed as a 1101-- and said packing sleeve and spindle having ports forpassage-of water from the chamber to said drill stem.

7. The combination in' a rotary drilling machine with a supporting crossbeam and rotary bearings therein, of a hollow drill spindle and drillstem, said spindle having a solid shaft portion supported in saidbearings, and means for furnishing circulation of water to said spindleand stem.

machine with its hollow spindle, of a coupling chuck secured at thelower end of said spindle, and means for connecting said chuck to ahollow drill stem, as described.

9. The combination in a rotary drilling machine with a hollow spindle,and a coupling chuck connected to said spindle and,

of an overflow basin, a supporting member and an outlet chamber thereinfor said basin, and means adaptable for connection between said chuckand basin whereby the latter may be disengaged from a well casing.

10. In a rotary drilling machine the combination with-a pair ofperforated, pivoted, supporting arms, of a cross head having bifurcatedand perforated ends connected to said arms, said cross head fashionedwith a flow basin closing said cup and communieating therewith, and awell casing connected with said basin, for the purpose described.

11. The combination in a rotary drilling machine "with a suspendeddriving mechanism and movable feed frame, of a drill head including abeam and suspending arms thereon, a cross head connected to said armsand a well casing supported-from said cross head, a drill stem withinthe casing, and connections between said stem and driving mechanismwhereby the stem is operated and the stem and casing are movable withthe feed frame. a

12. The combination in a rotary drilling machine with a suspended feedframe and driving mechanism supported thereon, of a 8. The combinationin a rotary drilling drill head alined with said mechanism and a drivenspindle supported in said head, a

drill stem connected with the spindle, a cross driving mechanismsupported thereon, of adrill head alined with said mechanism and adriven spindle supported in said head, a drill stem connected with saidspindle, a

cross head rigid with said frame, a well cas ing surrounding the stemand attached to said cross head, means for introducing water to-saidstem and means providing for egress of water from the well casing,forming part of said drill head.

GUSTAF W. HANSON.

